Make a new test to enforce the sizes of all structs and enums in the C API....

ppapi/c/ppb_url_request_info.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_C_PPB_URL_REQUEST_INFO_H_
 #define PPAPI_C_PPB_URL_REQUEST_INFO_H_
 
 #include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_time.h"
 
 struct PP_Var;
 
 typedef enum {
   PP_URLREQUESTPROPERTY_URL,                  // string
   PP_URLREQUESTPROPERTY_METHOD,               // string
   PP_URLREQUESTPROPERTY_HEADERS,              // string, \n-delim
   PP_URLREQUESTPROPERTY_STREAMTOFILE,         // PP_Bool (default=PP_FALSE)
   PP_URLREQUESTPROPERTY_FOLLOWREDIRECTS,      // PP_Bool (default=PP_TRUE)
 
   // Set to true if you want to be able to poll the download progress via the
   // URLLoader.GetDownloadProgress function.
   //
   // Boolean (default = PP_FALSE).
   PP_URLREQUESTPROPERTY_RECORDDOWNLOADPROGRESS,
 
   // Set to true if you want to be able to pull the upload progress via the
   // URLLoader.GetUploadProgress function.
   //
   // Boolean (default = PP_FALSE).
   PP_URLREQUESTPROPERTY_RECORDUPLOADPROGRESS
 } PP_URLRequestProperty;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_URLRequestProperty, 4);
 
 #define PPB_URLREQUESTINFO_INTERFACE "PPB_URLRequestInfo;1"
 
 struct PPB_URLRequestInfo {
   // Create a new URLRequestInfo object.  Returns 0 if the module is invalid.
   PP_Resource (*Create)(PP_Module module);
 
   // Returns PP_TRUE if the given resource is an URLRequestInfo. Returns
   // PP_FALSE if the resource is invalid or some type other than an
   // URLRequestInfo.
@@ skipping 31 matching lines @@
   //
   // Returns PP_FALSE if any of the parameters are invalid, PP_TRUE on success.
   PP_Bool (*AppendFileToBody)(PP_Resource request,
                               PP_Resource file_ref,
                               int64_t start_offset,
                               int64_t number_of_bytes,
                               PP_Time expected_last_modified_time);
 };
 
 #endif  // PPAPI_C_PPB_URL_REQUEST_INFO_H_